SKF 3311 ATN9/C3 2 Row Ball Bearing - 55 mm ID, 120 mm OD 49.2 mm Race Width

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₩757,220.00

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  • 2026년 11월 11일 부터 배송 준비 완료
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RS 제품 번호:
462-755
제조사 부품 번호:
3311 ATN9/C3
제조업체:
SKF
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모두 선택

브랜드

SKF

Product Type

Ball Bearing

Inside Diameter

55mm

Outside Diameter

120mm

Race Width

49.2mm

Race Material

Steel

Cage Material

Non-Metallic

Ball Material

Steel

End Type

Open

Number of Rows

2

Internal Clearance

C3

Static Load Rating

81.5kN

Contact Angle

30°

Dynamic Load Rating

112kN

Series

3311

Standards/Approvals

RoHS

Limiting Speed

5300rpm

Race Type

Grooved

Bearing Type

Angular Contact

COO (Country of Origin):
AT

SKF 3311 Series Ball Bearing, 55mm Inside Diameter, 120mm Outside Diameter - 3311 ATN9/C3


This ball bearing is a two-row angular contact unit designed to support combined radial and axial loads in machinery. It features steel races and rolling elements, an open configuration for maintenance access, and a non-metallic cage to reduce noise and friction during operation. The design suits rotating assemblies in precision equipment where controlled internal clearance is required.

Features and Benefits:


• 30° contact angle provides axial load-carrying capability • C3 internal clearance allows thermal expansion accommodation • Dynamic load capacity 112 kN improves operational durability • Static load capacity 81.5 kN resists static overloads • Limiting speed 5,300 r/min supports high-speed applications • Grooved raceways enhance accurate load distribution

Applications


• Suitable for spindle systems in automation equipment • Ideal for electric motor bearing arrangements • Used for precision gearboxes in industrial machinery • Can be used for rotary assemblies in electronic manufacturing

What materials contact directly with rolling elements?


The rolling elements and raceways are MADE from steel to provide hardened contact surfaces and wear resistance.

How does the open end type affect lubrication options?


The open design permits the use of external lubrication methods and simplifies re-lubrication intervals for ongoing maintenance.

What cage characteristics influence noise and friction?


The cage is non-metallic, which typically reduces vibration transmission and lowers friction compared with metal cages.

How does the bearing arrangement manage misalignment or shaft deflection?


The double-row angular contact configuration distributes loads across both rows, offering improved stiffness and tolerance to minor shaft deflection.

Are there environmental or regulatory considerations for selection?


The product meets RoHS requirements, indicating restricted use of certain hazardous substances in its constituent materials.

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